Using Docker in production environments requires in-depth knowledge of best practices for scaling, security, monitoring, and orchestration. This topic focuses on optimizing containerized applications for real-world usage, ensuring efficiency, reliability, and scalability.
The following MCQs are designed to help you gain expertise in Docker’s production best practices, preparing you for advanced interviews and real-world scenarios.
1.) What is the primary goal of using Docker in production?
A) To develop code faster
B) To streamline and standardize deployments
C) To replace virtual machines entirely
D) To save disk space
2.) What is the recommended way to store sensitive information like passwords in Docker production environments?
A) Store them directly in the Dockerfile
B) Use environment variables
C) Use Docker Secrets
D) Hard-code them into the application code
3.) Which of the following is a common orchestration tool used with Docker in production?
A) Kubernetes
B) Jenkins
C) Ansible
D) Terraform
4.) What is the main purpose of resource limits in Docker?
A) To prevent container logs from exceeding a size limit
B) To ensure fair resource allocation across containers
C) To encrypt communication between containers
D) To reduce image size
5.) Which Docker logging driver is commonly used in production for centralized log management?
A) JSON-file
B) syslog
C) Fluentd
D) none
6.) What does the docker checkpoint feature do?
A) Creates a snapshot of a container’s runtime state
B) Monitors resource usage of a container
C) Creates a backup of a container’s state
D) Restarts a container automatically
7.) Which is a best practice for updating a Docker container in production?
A) Modify the container directly using exec
B) Pull the latest image and restart the container
C) Create a new container with the updated image and replace the old one
D) Update the container’s base image
8.) What is the default logging driver in Docker?
A) JSON-file
B) syslog
C) Fluentd
D) Journald
9.) What is Docker’s Content Trust?
A) A method for container encryption
B) A feature for image signing and verification
C) A logging tool
D) A resource monitoring tool
10.) Why is it recommended to use read-only containers in production?
A) To improve container build times
B) To enforce immutability and enhance security
C) To reduce the size of the image
D) To simplify debugging
Related